Here is a short video that I did giving you a side-by-side look at a Colt LE901 .308 and 5.56mm bolt carrier groups.
The Colt AR-15 Resource
"A site dedicated to the history of the Colt AR-15 rifles, carbines and associated items"
Here is a short video that I did giving you a side-by-side look at a Colt LE901 .308 and 5.56mm bolt carrier groups.
The Colt AR-15 Resource 